Pneumatic tire thread and buttress



FIG. 1 is a perspective view of a pneumatic tire tread and buttress showing our new design, it being understood that the pattern is repeated throughout the circumference of the tread and buttress;

FIG. 2 is a front elevational view thereof; and,

FIG. 3 is a side elevational view thereof.

The broken line showing of environmental structure in the drawing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a pneumatic tire tread and buttress, as shown and described. 